OUTPUT-SWITCH CONTROL SYSTEM FOR AC-DC POWER SUPPLY

• US 20160268072A1
• Filed: 03/12/2015
• Published: 09/15/2016
• Est. Priority Date: 11/21/2014
• Status: Active Grant

• Current Assignee: Chyng Hong Electronic Co., Ltd.
• Original Assignee: Chyng Hong Electronic Co., Ltd.
• Inventors: Lin, Mu-Chun
• Granted Patent: US 9,748,055 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01H 1/2025 comprising two-parallel bridges
• CPC Class Codes: H01H 13/14 Operating parts, e.g. push-button
• CPC Class Codes: H01H 2013/525 using a return spring acting perpendicular to the actuating direction
• CPC Class Codes: H01H 2235/004 Two parallel coil springs
• CPC Class Codes: H01H 9/54 Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
• CPC Class Codes: H01H 9/547 Combinations of mechanical switches and static switches, the latter being controlled by the former
• CPC Class Codes: H03K 17/965 Switches controlled by moving an element forming part of the switch

Abstract

An output-switch control system for an AC-DC power supply includes a push-button switch that has two triggers. The triggers correspond to different contacts of a detecting circuit, respectively. When the push-button switch is pressed to make the triggers and the contacts turn into a close-circuit state form an open-circuit state, the detecting circuit outputs a power-source-on signal, and when the push-button switch is pressed again, and either of the triggers and the contact turn into the close-circuit state form the open-circuit state, the detecting circuit outputs a power-source-off signal immediately. With the dual-transition signal certification at the contacts, safe output-switch control can be achieved, so as to provide a user with operational safety.

Claims

1. An output-switch control system for an AC-DC power supply, the output-switch control system comprising:

a push-button switch, having a lengthwise button that includes at least two triggers and at least one spring member, so that the lengthwise button is configured as a self-return button; and

a detecting circuit, having an input end provided with at least two contacts that correspond to the triggers, respectively, wherein the contacts and the triggers initially form an open-circuit state;

whereby, when the push-button switch is pressed to make the triggers and contacts turn from the open-circuit state into a close-circuit state, the detecting circuit outputs a power-source-on signal, and when the push-button switch is pressed again, and either of the triggers and the contacts turn from the open-circuit state into the close-circuit state, the detecting circuit outputs a power-source-off signal immediately.

2. The output-switch control system of claim 1, wherein the contact has two free ends corresponding to the trigger, and the free ends are connected to the detecting circuit, respectively, so that trigger selectively forms the open-circuit state or the close-circuit state with the free ends.

3. The output-switch control system of claim 1, further comprising a CPU that is electrically connected to the detecting circuit.

4. The output-switch control system of claim 1, further comprising a high-capacity power switch that is electrically connected to the detecting circuit, and configured to selectively turn on or off a high-voltage power source according to a signal output by the detecting circuit.

5. The output-switch control system of claim 4, wherein the high-capacity power switch is a contactless switch.